Need a plugin that notifies users of outdated information

Is there a plug in that automatically inserts a message into a post that says something along the lines of “This post is 2 weeks old and information may be innacurate, please check our homepage for up to date information.”

I found an example of what I’m looking for. https://www.cheapstingybargains.com/45264/magellan-980-0007-001-maestro-3200-portable-gps-system-w-preloaded-maps-195-w-free-shipping/

look at the yellow box.

If not is there a plug-in that automatically deletes posts after a specified period of time?

Thank you in advance.